Improvement in wire-feeding mechanism



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R. L. BREWER. Wire-Feeding Mechanism. No. 169,081. Patented 0ct.26,1875.

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wan. echanism.

5 7 8 6w 2 .r c 0 d e l n e t a P EM R B 0 n Wire- Feed Wir WITNEEEEE,

ATTEIRNEY UNTTED STATES ROLAND L. BREWER, OF MILFORD, CONNECTICUT,ASSIGNOR TO HENRY G.

PATENT OFFICE.

THOMPSON, OF SAME PLACE.

lMPROVEM ENT I N WlRE-FEEDlNG MECHANISM.

Specification forming part of Letters Patent No. l 69.08 1, datedOctober 26, 1875; application filed August 16, 1875.

To all whom it may concern:

Be it known that I, ROLAND L. BREWER, of Milford, county of New Havenand State of Connecticut, have invented certain new and usefulImprovements in Mechanism for Feeding Wire, of which the following is ato which my invention appertains to, make and use the same I will nowproceed to describe its construction and operation, referring to theannexed drawing, which forms a part of this specification, and in whichFigure 1 is a side elevation of my Wirefeeding mechanism. Fig. 2 is aplan view of the same; and Fig. 3 is a detached view, showing theadjoining sides of the two slides used therein.

A represents the main shaft of the feeding mechanism, provided with twocranks, a a, set in diametrically opposite directions, and on saidcranks are placed, respectively, the two pitmen B and O for operatingthe slides D and E, respectively, to which they are connected. The slideD moves in suitable guides on a back plate, G, and is provided on itsouter face with a series of perforated studs, 1) 1), arranged on ahorizontal line, and through which the Wire 01 is passed. On this faceof the slide D near the outer end are pivoted tw'o cams, h h, pressedinward by means of springs it against stops 60 fastened in .the slide.The adjoining surfaces of thev cams h h are corrugated or otherwiseroughened, so as to take hold of the wire' d, which is passed betweenthem. The slide E moves in suitable guides on, or close to, the face ofthe slide D, and is on its inner face provided with a longitudinalgroove, 00, for the passage of the studs 1) and wire 'd. In a recess inthe inner face and at the inner end of the slide E are pivoted two cams,h h, with springs i 47,.and stops 6 e, constructed and arranged inprecisely the same man ner as those on the slide D.

The slides D and E always move in opposite directions, and when thefeeding device is in motion the slide that moves outward from the shaftdraws, by means of its cams, the wire forward, the cams upon the otherslide, which is then moving inward to the shaft, opening and allowingthe wire topass. As soon as the movement of the slides is reversed theoperation of the cams is also reversed, causing the wire to be fed acertain positive distance for each revolution of the shaft.

The extent of such feed is dependent on the length of stroke of theslides; or, in other words, on the size of the cranks a on the shaft A.

This feeding mechanism .is particularly designed for book-sewingmachines; but is equally applicable for any machines where a certainpositive feed is desired.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In combination with the slide D two spring cams or jaws, h, arrangedas herein specified, fofholding the wire during the for ward feedmovement and releasing the same on the back movement.

2. In a wire-feeding mechanism, the combination of the slide E, havingtwo spring cams orjaws, h h, with the pitman O and crankshaft A,[substantially as shown and described.

3. The combination of two reciprocating slides, D and E, operating inopposite directions, and provided upon their adjoining faces with springcams or jaws, arranged substantially as and for the purpose herein setforth.

4.. The combination of the crank-shaft A, pitmen B G, slide D withperforated studs 1),

cams h, and springs z, and the grooved slide.

E with cams h and springs t", all substantially as and for the purposesherein set forth. In testimony that I claim the foregoing as myinvention I hereunto affix my signature this 9th day of August, 1875.

ROLAND I BREWER.

Witnesses H. G. THOMPSON, FRANK L. ALLIs.

